Sentence Examples


  • This ocean, already diminished in area, retreated after Oligocene times from the Iranian plateau, Turkestan, Asia Minor and the region of the north-west Alps.
  • Fossil remains of members of this family have also been found in Europe in strata of the Oligocene period.
  • From the Oligocene deposits of France and southern England have been obtained numerous remains of opossums referable to the American family Didelphyidae.
  • In this valley were laid down, either in Eocene or Oligocene times, a great series of lake beds and thick accumulations of brown coal.
  • Oligocene Elornis and, allied, Palaelodus.